futility: extract verify_kernel command to an external test

The verify_kernel command is used only in a host-side test. It
doesn't need to be built into futility. This makes it a separate
executable used just for that test.

BUG=chromium:231547
BRANCH=none
TEST=make runtests

Note that the load_kernel_tests.sh still passes, using the
external verify_kernel executable.

Change-Id: I309d2561d65af7eb4f3708e9bc024852238deeec
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/235480
Reviewed-by: Randall Spangler <rspangler@chromium.org>
3 files changed